Naljo is a region within the Pokémon world that appears in Pokémon Prism.
Geography
Naljo is made up of several islands, connecting to Rijon (East), and Tunod (North), and possibly an Unidentified Region.
Apperances
Pokémon Prism
Naljo is the main region in Pokemon Prism, which the player accesses after arriving from an Unidentified Region.
Mentions
Pokémon Brown
Naljo is mentioned various times throughout the game, and a guard blocks the Naljo exit inside the International Tunnel. It is unknown exactly where the region limits between Naljo and Rijon are within the International Tunnel, meaning that the player could technically be inside the region of Naljo in Pokémon Brown.